Backslasher (2012)

A woman sells lingerie and sex toys.

Isla and Piers have sex, she shows breasts, he shows rear.

Becca and John have sex, she shows breasts. She later takes a shower, partial breast exposure.

Ruby gets out of a bath tub, partial breast exposure.

Several people are killed with a knife, blood is seen. Several people with bloodied faces. Several people jumped. A woman is bound, gagged, and slapped.

About 15 f-words, 8 s-words, 1 d--n, b-----d. Slang terms for anatomy.

Women drink at a party.

A woman's friends on social media are being killed. A serial killer follows people.